Joule per Kelvin

Kelvin per Joule

Joule

Kelvin

$dS = rac{dQ}{T}$

$dS = rac{dQ}{T^2}$

$dS = rac{dQ}{T^3}$

$dS = rac{dQ}{T^4}$

The total entropy of an isolated system always increases.

The total entropy of an isolated system always decreases.

The total entropy of an isolated system remains constant.

The total entropy of an isolated system can increase or decrease.

Heat cannot flow spontaneously from a colder to a hotter body.

Heat can flow spontaneously from a hotter to a colder body.

Heat can flow spontaneously from a colder to a hotter body if work is done.

Heat can flow spontaneously from a hotter to a colder body if work is done.

It is impossible to construct a heat engine that, operating in a cycle, absorbs energy from a reservoir and does an equivalent amount of work without rejecting some of the energy to a colder reservoir.

It is possible to construct a heat engine that, operating in a cycle, absorbs energy from a reservoir and does an equivalent amount of work without rejecting some of the energy to a colder reservoir.

It is impossible to construct a refrigerator that, operating in a cycle, transfers heat from a colder reservoir to a hotter reservoir without the input of work.

It is possible to construct a refrigerator that, operating in a cycle, transfers heat from a colder reservoir to a hotter reservoir without the input of work.

A measure of the disorder of a system.

A measure of the energy of a system.

A measure of the temperature of a system.

A measure of the pressure of a system.

Entropy increases when heat is added to a system.

Entropy decreases when heat is added to a system.

Entropy remains constant when heat is added to a system.

Entropy can increase or decrease when heat is added to a system.

Entropy increases when work is done on a system.

Entropy decreases when work is done on a system.

Entropy remains constant when work is done on a system.

Entropy can increase or decrease when work is done on a system.

Entropy increases with temperature.

Entropy decreases with temperature.

Entropy remains constant with temperature.

Entropy can increase or decrease with temperature.

Entropy increases with pressure.

Entropy decreases with pressure.

Entropy remains constant with pressure.

Entropy can increase or decrease with pressure.

Entropy increases with volume.

Entropy decreases with volume.

Entropy remains constant with volume.

Entropy can increase or decrease with volume.

Entropy increases during chemical reactions.

Entropy decreases during chemical reactions.

Entropy remains constant during chemical reactions.

Entropy can increase or decrease during chemical reactions.

Entropy increases during phase transitions.

Entropy decreases during phase transitions.

Entropy remains constant during phase transitions.

Entropy can increase or decrease during phase transitions.

Entropy increases inside black holes.

Entropy decreases inside black holes.

Entropy remains constant inside black holes.

Entropy can increase or decrease inside black holes.